I can try and dig for the original source, though google search has turned to shit in the last few years. What I remember is the advantage of grasses is as ann

I can try and dig for the original source, though google search has turned to shit in the last few years. What I remember is the advantage of grasses is as annuals you can selectively breed productive strains quickly. And that's true of other annual crops. Downside is they require a lot of nutrients and water because the whole plant needs to regrow from seed every year and they have shallow roots. That leads to energy and environmentally damaging agriculture. Potential solution is perennial shrubs and trees. Perennials have deeper roots and require less water and fertilizer. And don't require the land to be plowed every year. The latter is a real problem. People talk about global warming, less well known is the world is very quickly losing topsoil.